How to display large image properly in fixed size div?

Issue

I have a lot of large images with different size(300x400, 500x300...). And I want to display those large images properly scaled within a fixed size div.

For example, I have a 200x200 div, and a 500*300 image.

|--------------------|
|                    |
|                    |
|   div(200x200)     |
|                    |
|                    |
|--------------------|

|--------------------------------|
|                                |
|                                |
|   image(500x300)               |
|                                |
|                                |
|                                |
|                                |
|--------------------------------|

So the width of the image will be 200 pixels and height will proportionally scale and become 300 * 200 / 500 = 125 pixels. The image will look smaller, but it keeps its proportions and will still look good.

|--------------------|
|      Blank         |
|--------------------|
|                    |
|   Image(200x125)   |     # div (200x200)
|                    |
|--------------------|
|      Blank         |
|--------------------|

How can I do that? Is there any javascript libs to do this?

Solution

You need to use max-width and max-height css properties to the img tag.

img {
     max-width: 100%;
     max-height: 100%;
}

This will keep your image in aspect ratio with respect to its parent container.

When we don't know the image width and height, I suggest to use the following css code, which automatically aligns the image in the parent container.

.image-wrapper {
    display: table-cell;
    width: 100px;
    height:150px;
    vertical-align: middle;
    border: 1px solid black;
}

.image-wrapper img{
    max-width: 100%;
    max-height: 100%;
    display: block;
    margin: 0 auto;
}

Working Fiddle

Doing the same using background css property:

Working Fiddle

Answered By - Mr_Green